The primary purpose of this paper is to explore the consistency of the
Planck power spectra rather than to perform an exhaustive analysis of
the consistency of Planck with other types of data. We have
therefore limited the use of supplementary likelihoods to: (a)
Planck lensing (described in detail in [1]})
where we use the lensing likelihood as summarized in section 2.3 of
PCP18, and (b) baryon acoustic oscillation (BAO) measurements, where
we use the identical combination of BAO data as in PCP18. Most of the
statistical weight in the BAO meaurements comes from the `consensus'
constraints on \(D_M(z)\)  and \(H(z)\)  (see below for definitions)
measured in three redshift bins (\(z_{\rm eff}=0.38\) , \(0.51\)  and
\(0.61\) ) from the Baryon Oscillation Spectroscopic Survey (BOSS) DR12
analysis [2]}. As in PCP18, we also include the
measurements of \(D_V/r_{\rm drag}\)  at lower redshift from the 6dFGS
[3]} and SDSS-MGS [4]}. We follow a
similar, but more compact, notation to that used in PCP18. For
example: 12.5HMcl TTTEEE+lensing+BAO denotes the TT+TE+EE 12.5HMcl
high multipole likelihood combined with Commander and SimAll at
low multipoles together with the Planck lensing and BAO likelihoods.
